private void MainWindow_MouseUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
if (mode == Mode.DragNode)
{
Point p = e.GetPosition(this.MasterCanvas);
curNode.X = p.X - nodeOffsetX;
curNode.Y = p.Y - nodeOffsetY;
curNode = null;
mode = Mode.None;
}
else if (mode == Mode.LinkConnectors)
{
Point p = e.GetPosition(this.MasterCanvas);
this.linkPts[2].X = p.X + 10;
this.linkPts[2].Y = p.Y;
this.linkPts[3].X = p.X;
this.linkPts[3].Y = p.Y;
this.linkFigure.StartPoint = this.linkPts[0];
this.linkSegment.Point1 = this.linkPts[1];
this.linkSegment.Point2 = this.linkPts[2];
this.linkSegment.Point3 = this.linkPts[3];
this.linkSegment.IsStroked = true;
this.linkPath.Visibility = Visibility.Hidden;
DispConnector connector = InConnector(p);
if (connector != null)
{
curConnector.ConnectTo(connector);
curConnector.Parent.Layout(curConnector.Parent.X, curConnector.Parent.Y);
connector.Parent.Layout(connector.Parent.X, connector.Parent.Y);
}
mode = Mode.None;
}
}
public void SelectNode(DispNode node)
{
if (curSelection != null)
{
curSelection.Selected = false;
}
curSelection = node;
if (curSelection != null)
{
curSelection.Selected = true;
}
}
private void MainWindow_MouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
Point p = e.GetPosition(this.MasterCanvas);
if (mode == Mode.None)
{
// Check if point is in node
foreach (var dispNode in dispGraph.dispNodes)
{
if (dispNode.PointInObject(p.X, p.Y))
{
curNode = dispNode;
nodeOffsetX = p.X - dispNode.X;
nodeOffsetY = p.Y - dispNode.Y;
mode = Mode.DragNode;
UpdateProperties(curNode);
break;
}
else
{
UpdateProperties(null);
// Check if in connector ring
curConnector = InConnectorList(p, dispNode.inputs);
if (curConnector == null)
{
curConnector = InConnectorList(p, dispNode.outputs);
}
if (curConnector != null)
{
curNode = curConnector.Parent;
mode = Mode.LinkConnectors;
this.linkPts[0].X = p.X;
this.linkPts[0].Y = p.Y;
this.linkPts[1].X = p.X - 10.0;
this.linkPts[1].Y = p.Y;
this.linkPts[2].X = p.X - 10.0;
this.linkPts[2].Y = p.Y;
this.linkPts[3].X = p.X - 10.0;
this.linkPts[3].Y = p.Y;
this.linkPath.Visibility = Visibility.Visible;
break;
}
}
}
}
}
private void UpdateProperties(DispNode node)
{
this.dispGraph.SelectNode(node);
PropertyGrid.Children.Clear();
PropertyGrid.RowDefinitions.Clear();
if (node != null && node.properties != null)
{
int row = 0;
foreach (var item in node.properties)
{
PropertyGrid.RowDefinitions.Add(new RowDefinition());
Label l = new Label();
l.Content = item.Key;
l.SetValue(Grid.RowProperty, row);
l.SetValue(Grid.ColumnProperty, 0);
PropertyGrid.Children.Add(l);
TextBox tb = new TextBox();
tb.Text = item.Value.ToString();
tb.SetValue(Grid.RowProperty, row++);
tb.SetValue(Grid.ColumnProperty, 1);
PropertyGrid.Children.Add(tb);
}
}
}
public static void Connect(DispNode n1, string name1, DispNode n2, string name2)
{
n1.FindConnector(name1).Connections.Add(n2.FindConnector(name2));
n2.FindConnector(name2).Connections.Add(n1.FindConnector(name1));
}
public DispConnector(DispNode parent, string name, Canvas parentCanvas, bool isInput) : base(parentCanvas)
{
this.Parent = parent;
this.Connections = new List <DispConnector>();
this.Name = name;
this.IsInput = isInput;
this.Width = 140.0;
this.Height = 15.0;
// Draw connector line
this.line = new Line();
this.ParentCanvas.Children.Add(this.line);
this.line.SetValue(Canvas.ZIndexProperty, 4);
this.line.Stroke = new SolidColorBrush(Color.FromRgb(0, 0, 0));
this.line.StrokeThickness = 3.0;
// Draw connector circle
this.ellipse = new Ellipse();
this.ellipse.SetValue(Canvas.ZIndexProperty, 4);
this.ParentCanvas.Children.Add(ellipse);
this.ellipse.Fill = new SolidColorBrush(Color.FromRgb(0, 0, 0));
this.ellipse.Width = 10.0;
this.ellipse.Height = 10.0;
this.ellipse.Stroke = new SolidColorBrush(Color.FromRgb(0, 0, 0));
this.ellipse.StrokeThickness = 2.0;
// Add name of input node
this.tb = new TextBlock();
this.tb.SetValue(Canvas.ZIndexProperty, 4);
this.ParentCanvas.Children.Add(tb);
this.tb.Text = name;
// line delimiting input nodes
this.separator = new Line();
this.separator.SetValue(Canvas.ZIndexProperty, 4);
this.ParentCanvas.Children.Add(this.separator);
this.separator.Stroke = new SolidColorBrush(Color.FromRgb(0, 0, 0));
this.separator.StrokeThickness = 1.0;
if (isInput)
{
this.link = new Path();
this.link.SetValue(Canvas.ZIndexProperty, 5);
this.link.Stroke = new SolidColorBrush(Color.FromRgb(0, 0, 0));
this.link.Opacity = 0.7;
this.link.StrokeThickness = 4.0;
var geom = new PathGeometry();
var figure = new PathFigure();
this.pts[0] = new System.Windows.Point(-20.0, 0.0);
this.pts[1] = new System.Windows.Point(-30.0, 0.0);
this.pts[2] = new System.Windows.Point(-30.0, 10.0);
this.pts[3] = new System.Windows.Point(-20.0, 10.0);
figure.StartPoint = this.pts[0];
var segment = new BezierSegment(this.pts[1], this.pts[2], this.pts[3], true);
figure.Segments.Add(segment);
geom.Figures.Add(figure);
this.link.Data = geom;
VisualNode.MasterCanvas.Children.Add(this.link);
}
Layout(0.0, 0.0);
}